Regulations & Permits

Use this portal to filter and search for all of our regulatory information.

We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.

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Microsoft MWH Data Center Approval Order No. 20AQ-E005

This is the air quality permit No. 20AQ-E005 for Microsoft MWH Data Center in Quincy.

https://ecology.wa.gov/20200227mwhao20aqe005

Microsoft Columbia Approval Order No. 20AQ-E002

This is the air quality approval order 20AQ-E002 for Microsoft Columbia data center in Quincy.

https://ecology.wa.gov/20200206microsoftcolumbia20aqe002

Sabey Data Center Approval Order 20AQ-E22

This is the 2020 approval order for Sabey Data Center in Quincy.

https://ecology.wa.gov/20200916sabeydatacenterao20aqe22

Sabey Data Center 2020 Tier 2 letter & HIA Recommendation

This is the 2020 Tier 2 letter and Health Impact Assessment Recommendation for Sabey Data Center, Quincy

https://ecology.wa.gov/20200529sabeytier2hiarecomm

Sabey Data Center 2020 NOC App

This is the 2020 Notice of Construction Application for Sabey Data Center in Quincy

https://ecology.wa.gov/20200413sabeynocapp

Sabey Data Center 2020 Trinity HIA

This is the 2020 Health Impact Assessment by Trinity Consultants for Sabey Data Center in Quincy.

https://ecology.wa.gov/20200403sabeyhiatrinity

2019 Pretreatment Plan

Document describing the plans of the Permittee for treating Z. japonica on their commercial clam beds this year.

https://ecology.wa.gov/2019willapapretreatmentplan